farfli | 2ce4b5dfaa97c25def27ce1cea3c99f52db19d8cc6d9ca031704081f041509c5

Analysis

max time kernel
149s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20260513-en
resource tags

arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
09/08/2026, 06:30

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General

Target
2026-08-09_be9452370b69beffc698b2089905e403_coinminer_elex_wannacry.exe
Size 173KB
Sample260809-g9sn8swsdx
SHA256 2ce4b5dfaa97c25def27ce1cea3c99f52db19d8cc6d9ca031704081f041509c5
MD5 be9452370b69beffc698b2089905e403
SHA1 f5378a7d88be447462b466f7475c0e79eb50bdd8
SHA512 6121a813bfc2f1ca39c00b575cb87047ad2136f977d64e2699a369ce7abe46a2edbd8db3ed0f465f703c633d303449078f5786019dac8727fd38531aba35558f
SSDEEP 3072:h1qLbqRhEAZqR29I5pmHr8/iOwkZ4YHvpzerWA0luLUq:h0AZ42S5pp/dWYHBAWd+
TLSH
T15004F101A759951AD333093F0A23527EA6BE7D344F1C75D3E7C96A2E5039FE0A62121F
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor bootkit discovery execution farfli persistence spyware stealer upx

Malware Config

Signatures

Family: Farfli
Farfli is a Windows backdoor written in C++.
backdoor farfli

Detects Farfli Backdoor 4 IoCs

resource	yara_rule
behavioral1/memory/5116-8-0x0000000010000000-0x000000001003A000-memory.dmp	family_farfli
behavioral1/memory/5116-10-0x0000000010000000-0x000000001003A000-memory.dmp	family_farfli
behavioral1/memory/5116-11-0x0000000010000000-0x000000001003A000-memory.dmp	family_farfli
behavioral1/memory/5116-13-0x0000000010000000-0x000000001003A000-memory.dmp	family_farfli

Custom signature

Detects executables containing base64 encoded User Agent 4 IoCs

resource	yara_rule
behavioral1/memory/5116-8-0x0000000010000000-0x000000001003A000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/5116-10-0x0000000010000000-0x000000001003A000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/5116-11-0x0000000010000000-0x000000001003A000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/5116-13-0x0000000010000000-0x000000001003A000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

Custom signature

Detects executables packed with VMProtect. 4 IoCs

resource	yara_rule
behavioral1/memory/5116-8-0x0000000010000000-0x000000001003A000-memory.dmp	INDICATOR_EXE_Packed_VMProtect
behavioral1/memory/5116-10-0x0000000010000000-0x000000001003A000-memory.dmp	INDICATOR_EXE_Packed_VMProtect
behavioral1/memory/5116-11-0x0000000010000000-0x000000001003A000-memory.dmp	INDICATOR_EXE_Packed_VMProtect
behavioral1/memory/5116-13-0x0000000010000000-0x000000001003A000-memory.dmp	INDICATOR_EXE_Packed_VMProtect

Custom signature

UPX dump on OEP (original entry point) 7 IoCs

resource	yara_rule
behavioral1/files/0x00060000000231d3-2.dat	UPX
behavioral1/files/0x000c00000002451b-5.dat	UPX
behavioral1/memory/5116-7-0x0000000010000000-0x000000001003A000-memory.dmp	UPX
behavioral1/memory/5116-8-0x0000000010000000-0x000000001003A000-memory.dmp	UPX
behavioral1/memory/5116-10-0x0000000010000000-0x000000001003A000-memory.dmp	UPX
behavioral1/memory/5116-11-0x0000000010000000-0x000000001003A000-memory.dmp	UPX
behavioral1/memory/5116-13-0x0000000010000000-0x000000001003A000-memory.dmp	UPX

Badlisted process makes network request 4 IoCs

Network request originating from process or tool commonly abused by malware.

flow	pid	Process
12	5116	rundll32.exe
38	5116	rundll32.exe
39	5116	rundll32.exe
50	5116	rundll32.exe

Deletes itself 1 IoCs

pid	Process
3748	xmcqr.exe

Executes dropped EXE 1 IoCs

pid	Process
3748	xmcqr.exe

Loads dropped DLL 1 IoCs

pid	Process
5116	rundll32.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1074038928-2032447174-945360078-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\qmuqwvu\\hhzatv.hah\",Exit"	rundll32.exe

Enumerates connected drives 3 TTPs 23 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\e:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1542.003

description	ioc	Process
File opened for modification	\??\PHYSICALDRIVE0	rundll32.exe

UPX packed file 1 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/files/0x00060000000231d3-2.dat	upx

Executes a command shell one-liner 1 TTPs 1 IoCs

Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

execution

Windows Command Shell

T1059.003

pid	Process
3412	cmd.exe

System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	xmcqr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-08-09_be9452370b69beffc698b2089905e403_coinminer_elex_wannacry.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
3412	cmd.exe
1440	PING.EXE

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	rundll32.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	rundll32.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1440	PING.EXE

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
5116	rundll32.exe
5116	rundll32.exe
5116	rundll32.exe
5116	rundll32.exe
5116	rundll32.exe
5116	rundll32.exe
5116	rundll32.exe
5116	rundll32.exe
5116	rundll32.exe
5116	rundll32.exe
5116	rundll32.exe
5116	rundll32.exe
5116	rundll32.exe
5116	rundll32.exe
5116	rundll32.exe
5116	rundll32.exe
5116	rundll32.exe
5116	rundll32.exe
5116	rundll32.exe
5116	rundll32.exe
5116	rundll32.exe
5116	rundll32.exe
5116	rundll32.exe
5116	rundll32.exe
5116	rundll32.exe
5116	rundll32.exe
5116	rundll32.exe
5116	rundll32.exe
5116	rundll32.exe
5116	rundll32.exe
5116	rundll32.exe
5116	rundll32.exe
5116	rundll32.exe
5116	rundll32.exe
5116	rundll32.exe
5116	rundll32.exe
5116	rundll32.exe
5116	rundll32.exe
5116	rundll32.exe
5116	rundll32.exe
5116	rundll32.exe
5116	rundll32.exe
5116	rundll32.exe
5116	rundll32.exe
5116	rundll32.exe
5116	rundll32.exe
5116	rundll32.exe
5116	rundll32.exe
5116	rundll32.exe
5116	rundll32.exe
5116	rundll32.exe
5116	rundll32.exe
5116	rundll32.exe
5116	rundll32.exe
5116	rundll32.exe
5116	rundll32.exe
5116	rundll32.exe
5116	rundll32.exe
5116	rundll32.exe
5116	rundll32.exe
5116	rundll32.exe
5116	rundll32.exe
5116	rundll32.exe
5116	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	5116	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3932	2026-08-09_be9452370b69beffc698b2089905e403_coinminer_elex_wannacry.exe
3748	xmcqr.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3932 wrote to memory of 3412	3932	2026-08-09_be9452370b69beffc698b2089905e403_coinminer_elex_wannacry.exe	85
PID 3412 wrote to memory of 1440	3412	cmd.exe	87
PID 3412 wrote to memory of 3748	3412	cmd.exe	92
PID 3748 wrote to memory of 5116	3748	xmcqr.exe	93

C:\Users\Admin\AppData\Local\Temp\2026-08-09_be9452370b69beffc698b2089905e403_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-09_be9452370b69beffc698b2089905e403_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3932
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\xmcqr.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-09_be9452370b69beffc698b2089905e403_coinminer_elex_wannacry.exe"
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:3412
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 2
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:1440
- - C:\Users\Admin\AppData\Local\Temp\xmcqr.exe
    C:\Users\Admin\AppData\Local\Temp\\xmcqr.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-09_be9452370b69beffc698b2089905e403_coinminer_elex_wannacry.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:3748
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\qmuqwvu\hhzatv.hah",Exit C:\Users\Admin\AppData\Local\Temp\xmcqr.exe
      4⤵
      Badlisted process makes network request
      Loads dropped DLL
      Adds Run key to start application
      Enumerates connected drives
      Writes to the Master Boot Record (MBR)
      System Location Discovery: System Language Discovery
      Checks processor information in registry
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:5116

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Windows Command Shell

T1059.003

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Pre-OS Boot

T1542

Bootkit

T1542.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Pre-OS Boot

T1542

Bootkit

T1542.003

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

Remote System Discovery

T1018

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

xmcqr.exe

Path C:\Users\Admin\AppData\Local\Temp\xmcqr.exe
Size 173KB
SHA256 6763c8d16f7627e74bf546793080b5d3c8a3ac3aaad184d0e3846f0a548d6c5a
MD5 43730817300d8744e003a3b39e7aad22
SHA1 66cf0b528e2cfb9b7f5e289dfb1ef8738273f96c
SHA512 fd865733230c26fda2a6600e7ff723867cfdb9ef48d39afad1b7923ed0c378c2556deb357f6ed88337c22c3f575783e7f3fa378de594f2dde3e2956d6361ddb3
SSDEEP 3072:h1qLbqRhEAZqR29I5pmHr8/iOwkZ4YHvpzerWA0luLUq7:h0AZ42S5pp/dWYHBAWd+7
TLSH
T19904F101A759951AD333093F0A22127EA6BE7D344F1C75D3E7C9AA2E5039FE0A62121F
MD5 SHA1 SHA512 SSDEEP TLSH

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hhzatv.hah

Path \??\c:\qmuqwvu\hhzatv.hah
Size 116KB
SHA256 53a1a5f96fce740b377bb053a358c0a50c63dfafddb8925d9aca66c852420872
MD5 f05a84544193f908045a170532883815
SHA1 3ad06ef6cc572a5e363d7fe05dcde5e646445994
SHA512 eda15ad3d6656a0146fd9476b205d1aefb7f4f6ecd1ea73b46b39157bb62f99d531114fc5ea32de485382577a7cbff4ae0edd4efdab1706c9840a9d165bac2ff
SSDEEP 3072:fCp96vhbrOz3bCMqKZ0V4Slz+n14q1/Jo5z5i4:6p961rOrDrZddJoz5i4
TLSH
T170C302D9B720C9EDC7E2727884BF6271170B908E4879D22F6CEEF89294711D0F0425B6
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/5116-7-0x0000000010000000-0x000000001003A000-memory.dmp

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memory/5116-8-0x0000000010000000-0x000000001003A000-memory.dmp

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memory/5116-10-0x0000000010000000-0x000000001003A000-memory.dmp

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memory/5116-11-0x0000000010000000-0x000000001003A000-memory.dmp

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memory/5116-13-0x0000000010000000-0x000000001003A000-memory.dmp

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